Where Does the Wax Go When Candles Burn?
Where Does the Wax Go When Candles Burn? Nowhere-it simply changes into other substances. That is what burning does to everything. The moment you put a match to the...
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What Are Gamma Rays?
What Are Gamma Rays? Gamma rays are streams of electromagnetic waves. They are given off from elements such as radium, when they undergo a process known as radioactive...
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How Far Can You See?
How Far Can You See? How far the human eye can see depends on how many particles of light, or photons, a distant object emits. The farthest object visible with the...
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What Is Radar?
What Is Radar? Radar, or radiolocation, as it was called in the early days, is the use of radio waves to find the whereabouts of aircraft or ships. Electromagnetic...
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How Do Automatic Doors Work?
How Do Automatic Doors Work? Doors — known as automatic doors — open and close with the help of simple technology, they operate with the help of sensors. Sensors do...
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